We all have our comforts to get the best sleep possible, but it turns out a yellow-stained pillow is a staple for a lot of men and it's sparked a debate online.
A photo of a yellow-stained pillow from Getty Images went viral went it was posted to Twitter/X by user Cam Thomson (@largemotorcycle).
"Gf is mad at me because I have revealed to her The Yellow Pillow. Fellas, i’m sure you all know that this thing is magic," he wrote in the caption.
He added in a follow-up tweet: "It’s not my fault the pillow is yellow and bestows upon me the most peaceful slumber."
“To me, it’s my most comfortable pillow and a sign of a well-loved item,” Thomson told NBC News, but it has since been "tucked away in storage," as his girlfriend wanted him to throw it away.
The tweet quickly began to do numbers, receiving 4.5m views, and over 63,000 likes and prompting a discussion where it there was an apparent gender divide as men were particularly attached to their yellow pillows from their childhood which apparently "give[s] you the best sleep of your life."
"Part of being a man is using the same pillow since the age of 10 and never washing it," one person wrote.
While another person said: "My life has been a downward spiral since I threw away mine when I was like 23."
"I got rid of my yellow pillows maybe a year ago and I legit haven't rested comfortably since," someone else added.
A fourth person commented: "Women will never understand the male attachment to their yellow pillow."
While the women aren't exactly fans of the yellow pillows and make it known in the discourse.
One person wrote: "If you go to his house and see these leave."
"Yuck. This is just like my husband’s pillow. He calls it “seasoning," another person said.
Someone else added: "Why do all men have a yellow pillow. WASH IT"
As this debate roars on, the real question is... why do pillows turn yellow in the first place?
It's all to do with the accumulation of moisture such as sweat, drool, wet hair, and even skincare products, according to Sleep Foundation.
But a yellow pillow could also hinder your sleep due to the presence of allergens where things such as dust mites, and mildew build up in the pillow and cause allergic reactions.
Your skin may also break out when using a yellow pillow due to the bacterial buildup on the surface you rest your head on each night.
It is recommended that pillows should be replaced in one to two years or sooner if they begin to discolour.